Did you put gas in your car without shutting it off? If that is the case, you will have to get it reset by the professionals. It happened to a 2001 Ford Taurus that we had. I also heard or read somewhere that you can reset it yourself by removing the battery cables for a few minutes and reconnecting.Did you put gas in your car without shutting it off? If that is the case, you will have to get it reset by the professionals. It happened to a 2001 Ford Taurus that we had. I also heard or read somewhere that you can reset it yourself by removing the battery cables for a few minutes and reconnecting.

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Re: My check engine light came on and has stayed on. I...

A check engine light comes on because the computer detects a problem with a sensor, actuator, or system that it monitors. It has nothing to do with fluid levels or filter conditions. Most of the time the vehicle will run fine with no other indications that there is a problem other than the check engine light being on.

There are literally thousands of reasons for the light to be on and hundreds of troubles that it could represent. Tryiong to narrow down the possibilities without knowing what trouble codes have been triggered by the computer is nearly impossible no to mention the amount of time it would take to check every device the computer looks at or controls to see if it is working under the parameters it is intended for.

The first thing you need to do is have the computer scanned for trouble codes. If you call around you should be able to find a local parts store that will do this for your for either a small charge or for free. If you happen to use Autozone DO NOT BUY ANYTHING THEY RECOMMEND THAT YOU NEED. Once you have the trouble codes post them here. We will be happy to help you further.

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You can reset the Check Engine light by using an OBDII diagnostics utility machine. However, I would highly recommend fixing the problem that is causing the situation, as you will have to continually reset the light in this manner every so often until the problem is corrected. Besides the obvious "tighten the gas tank cap fully" trick, usually, when a car seems to be running fine but the Check Engine light is on, it's one of the cars exhaust sensors. Common culprits are: The O2 sensor in the exhaust system, or a deficient catalytic converter. Neither one is particularly good news, as both parts tend to be a bit pricey. Keep in mind that your car will not pass its next inspection if the catalytic converter is bad. Good luck!
-Tom